If you’re thinking these numbers seem a bit lower than the manual ZL1 fitted with the same HPE850 upgrades, that’s because they are; the six-speed ZL1 HPE850 posted 735 peak horsepower at the wheels, thanks to a more efficient drivetrain.

Side note: HPE also notes that, bone stock, the automatic ZL1 made 588 horsepower to the the rear wheels in seventh gear – an impressive feat.

Like you, we’d really like to see the ZL1 HPE850 automatic go head-to-head with its manual-equipped counterpart on the drag strip. With any luck, that video will come along at a later date.

Until then, click play above to watch Hennessey’s automatic ZL1 HPE850 put its power down on the dyno.